EP2480800B2 - Elastomeric journal bearing having a plastic outer tube - Google Patents

Elastomeric journal bearing having a plastic outer tube Download PDF

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Publication number
EP2480800B2
EP2480800B2 EP10770974.3A EP10770974A EP2480800B2 EP 2480800 B2 EP2480800 B2 EP 2480800B2 EP 10770974 A EP10770974 A EP 10770974A EP 2480800 B2 EP2480800 B2 EP 2480800B2
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EP
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Prior art keywords
outer tube
bearing
bush
inner part
elastomeric
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EP10770974.3A
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German (de)
French (fr)
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EP2480800B1 (en
EP2480800A1 (en
Inventor
Jörg Scharf
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Boge Elastmetall GmbH
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Boge Elastmetall GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3842—Method of assembly, production or treatment; Mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3863—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the rigid sleeves or pin, e.g. of non-circular cross-section

Definitions

  • the invention relates to a method for producing an elastomeric bush bearing, the essentially cylindrical outer sleeve or outer tube of which consists of a plastic. It relates to a method for producing a bushing bearing of the type mentioned, the extrusion force of which is increased by the design according to the invention.
  • Elastomer bushing bearings or rubber bushings are used in particular in vehicle construction for the storage of different vehicle components on a large scale and in various forms.
  • bearings consist of a strand-like or tubular metallic inner part, an outer tube generally concentrically surrounding this inner part and an outer tube, which is arranged between the inner part and the outer sleeve and connected to them by vulcanization, through which a damping spring is formed.
  • a generic bearing is, for example, from DE 40 20 713 A1 and from the US 2004/0108639 A1 known.
  • the damping effect of the bearing body can optionally be supplemented by a hydraulic damping system.
  • At least two chambers for receiving a fluid damping agent are formed in the bearing, which chambers are connected to one another by at least one damping agent channel.
  • the outer tube or the outer sleeve like the inner part, is mostly made of metal.
  • the outer tube of a bushing bearing has recently been made partly of plastic.
  • Bushing bearings of the type described are used in motor vehicles, among other things, for mounting parts of the chassis. In so far as they are used, for example, to support suspension arms, it is customary to press the bearings into a receiving eye provided on the suspension arm for connection to the suspension arm.
  • the bearing described has a special geometry with a waist of its bearing body which, with respect to its axial extent, protrudes axially on both sides of the outer sleeve made of plastic, which is arranged in the region of the waist, with a partial radial overlap.
  • an undercut is also provided on the bearing body in the region of its waist to increase the extrusion force.
  • the bearing described has a comparatively complicated geometric shape.
  • the object of the invention is to provide a solution which makes it possible to increase the extrusion force in a bush bearing equipped with an outer sleeve made of plastic while maintaining a simple shape for the bearing.
  • the object is achieved by a method for producing an elastomeric bush bearing with the features of the main claim.
  • Advantageous refinements and developments of the invention are given by the subclaims.
  • the elastomeric bush bearing produced according to the method proposed to achieve the object is in particular intended to be received by a receiving eye into which the bush bearing is pressed.
  • it consists of a metallic inner part, an outer tube surrounding the inner part and an elastomeric bearing body arranged between the inner part and the outer tube and connected to them by vulcanization.
  • the outer tube consists of a plastic, depending on the task.
  • the metallic inner part is in the form of a strand or a tube.
  • the outer tube has, according to the invention, a thin casing in the form of an elastomeric layer vulcanized onto the outer tube. While the plastic from which the outer tube is made exhibits a certain creep behavior, which significantly reduces the extrusion force of a corresponding bearing compared to bush bearings with an outer sleeve made of steel or aluminum, the elastomeric casing provided according to the invention has a persistence so that A high extrusion force is ensured in relation to a receiving eye receiving the bearing.
  • the casing of the outer tube of the bushing bearing is preferably designed as a thin rubber layer that is less than 2 mm thick. In principle, it is conceivable to provide the outer tube of the bearing with a corresponding elastomeric casing only in sections.
  • the principle according to the invention of sheathing with an elastomeric layer is basically applicable to all bush bearings with an outer tube made of plastic.
  • the outer tube or the outer sleeve of the bushing bearing according to the invention can preferably consist of a polyamide, a polyurethane or an ABS plastic (acrylonitrile-butadiene-styrene). It is also possible to design the bearing as a hydraulic bushing, depending on the particular application.
  • At least two chambers are used in the camp Receiving a fluid damping means formed, which are connected to one another by at least one channel.
  • a prefabricated elastomeric molded part is inserted into the mold used for vulcanization in the manufacture of the socket to encase the outer tube and this, for example, tubular molded part is vulcanized together with the socket.
  • the casing is preferably vulcanized by combining an injection molding process (TM transfer molding) or an injection molding process (IM injection molding) with a postbonding process in which the molded rubber part is already partially vulcanized During the production of the outer tube, it is completely vulcanized and connected to the outer tube, which is preferably provided with an adhesive layer or an additional adhesive.
  • TM transfer molding injection molding process
  • IM injection molding injection molding process
  • a corresponding method which enables a partially vulcanized molded part to adhere to a metal or plastic surface by vulcanizing it, for which the term postbonding is now used, is for example in US Pat DE 199 19 573 A1 described.
  • elastomeric sheaths with layer thicknesses of less than 2 mm can be realized, although other layers are used to produce ultra-thin, skin-like rubber layers with a thickness of 0.2 mm or less Procedure to be used.
  • the Fig. 1 shows a possible embodiment of an elastomeric bush bearing produced according to the invention in a three-dimensional representation, the camp is shown in a partial section to better illustrate its structure.
  • the bearing consists of the tubular metallic inner part 1, the outer tube 2 made of plastic, which concentrically surrounds this inner part 1, and the elastomeric bearing body 3 arranged between the inner part 1 and the outer tube 2 and connected to them by vulcanization 2 with a jacket 4 in the form of a thin elastomeric layer, preferably a rubber jacket.
  • the thin casing 4 made of rubber covers the outer tube 2 over its entire extent in the axial direction a and has a thickness d of at least less than 2 mm.
  • Fig. 2 is the bush bearing according to Fig.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines elastomeres Buchsenlagers, dessen im Wesentlichen zylinderförmige Außenhülse beziehungsweise dessen Außenrohr aus einem Kunststoff besteht. Sie bezieht sich auf ein Verfahren zur Herstellung eines Buchsenlagers der genannten Art, dessen Auspresskraft durch die erfindungsgemäße Gestaltung erhöht ist.The invention relates to a method for producing an elastomeric bush bearing, the essentially cylindrical outer sleeve or outer tube of which consists of a plastic. It relates to a method for producing a bushing bearing of the type mentioned, the extrusion force of which is increased by the design according to the invention.

Elastomere Buchsenlager beziehungsweise Gummibuchsen werden insbesondere im Fahrzeugbau zur Lagerung unterschiedlicher Fahrzeugkomponenten in großem Umfang und in verschiedenen Ausbildungsformen eingesetzt. Entsprechend ihrem grundsätzlichen Aufbau bestehen derartige Lager aus einem strang- oder rohrförmigen metallischen Innenteil, einem dieses Innenteil im Allgemeinen konzentrisch umgebenden Außenrohr und einem zwischen dem Innenteil und dem auch als Außenhülse bezeichneten Außenrohr angeordneten und mit ihnen durch Vulkanisation verbundenen elastomeren Lagerkörper, durch welchen eine Dämpfungsfeder gebildet ist. Ein gattungsgemäßes Lager ist beispielsweise aus der DE 40 20 713 A1 und aus der US 2004/0108639 A1 bekannt.
In Abhängigkeit von dem jeweiligen Einsatzzweck und dem im Zusammenhang damit geforderten Dämpfungsverhalten kann die Dämpfungswirkung des Lagerkörpers gegebenenfalls zusätzlich durch ein hydraulisches Dämpfungssystem ergänzt sein. Hierzu sind dann in dem Lager mindestens zwei Kammern zur Aufnahme eines fluiden Dämpfungsmittels ausgebildet, welche durch mindestens einen Dämpfungsmittelkanal miteinander verbunden sind. Bei bekannten Buchsenlagern besteht das Außenrohr beziehungsweise die Außenhülse, ebenso wie das Innenteil, zumeist aus Metall. Insbesondere zur Gewichtsreduktion wird jedoch das Außenrohr eines Buchsenlagers in neuerer Zeit teilweise auch aus Kunststoff ausgebildet. Buchsenlager der beschriebenen Art werden in Kraftfahrzeugen unter anderem auch zur Lagerung von Teilen des Fahrwerks eingesetzt. Soweit sie dabei beispielsweise zur Lagerung von Fahrwerkslenkern eingesetzt werden, ist es üblich, die Lager zur Verbindung mit dem Fahrwerkslenker in ein an dem Fahrwerkslenker vorgesehenes Aufnahmeauge einzupressen. In der Praxis besteht hierbei die Forderung, dass die Verbindung zwischen dem Buchsenlager und dem Fahrwerkslenker hohen Auspresskräften standhalten muss, damit das Lager bei entsprechenden Belastungen nicht aus dem Aufnahmeauge herausgedrückt wird. Dabei hat es sich gezeigt, dass die Auspresskräfte von Buchsenlagern, welche eine Außenhülse aus Kunststoff aufweisen, deutlich geringer sind, als bei Lagern mit einem Außenrohr aus Stahl oder Aluminium.
Ein zur Aufnahme durch ein Aufnahmeauge vorgesehenes elastomeres Buchsenlager, dessen Außenhülse aus Kunststoff besteht, ist beispielsweise durch die DE 10 2004 054 618 A1 bekannt geworden. Die in der Druckschrift beschriebene Lösung bezieht sich insbesondere auch auf Maßnahmen zur Erhöhung der Auspresskraft des Lagers. Demgemäß weist das beschriebene Lager eine spezielle Geometrie mit einer Taillierung seines Lagerkörpers auf, welcher die bezogen auf seine axiale Erstreckung im Bereich der Taillierung angeordnete Außenhülse aus Kunststoff axial beidseitig bei teilweiser radialer Überdeckung überragt. Entsprechend einer vorgesehenen Ausbildungsform ist zudem an dem Lagerkörper im Bereich seiner Taille ein Hinterschnitt zur Erhöhung der Auspresskraft vorgesehen. Insoweit weist das beschriebene Lager eine vergleichsweise komplizierte geometrische Form auf.Elastomer bushing bearings or rubber bushings are used in particular in vehicle construction for the storage of different vehicle components on a large scale and in various forms. According to their basic structure, such bearings consist of a strand-like or tubular metallic inner part, an outer tube generally concentrically surrounding this inner part and an outer tube, which is arranged between the inner part and the outer sleeve and connected to them by vulcanization, through which a damping spring is formed. A generic bearing is, for example, from DE 40 20 713 A1 and from the US 2004/0108639 A1 known.
Depending on the particular application and the damping behavior required in connection therewith, the damping effect of the bearing body can optionally be supplemented by a hydraulic damping system. For this purpose, at least two chambers for receiving a fluid damping agent are formed in the bearing, which chambers are connected to one another by at least one damping agent channel. In known bush bearings, the outer tube or the outer sleeve, like the inner part, is mostly made of metal. In particular, to reduce weight, however, the outer tube of a bushing bearing has recently been made partly of plastic. Bushing bearings of the type described are used in motor vehicles, among other things, for mounting parts of the chassis. In so far as they are used, for example, to support suspension arms, it is customary to press the bearings into a receiving eye provided on the suspension arm for connection to the suspension arm. In practice, there is a requirement here that the connection between the bushing bearing and the chassis control arm must withstand high press-out forces so that the bearing is not pushed out of the receiving eye when there is a corresponding load. It has been shown that the extrusion forces of bush bearings which have an outer sleeve made of plastic are significantly lower than in bearings with an outer tube made of steel or aluminum.
An elastomer bush bearing provided for receiving by a receiving eye, the outer sleeve of which is made of plastic, is for example by the DE 10 2004 054 618 A1 known. The solution described in the publication also relates in particular to measures for increasing the press-out force of the bearing. Accordingly, the bearing described has a special geometry with a waist of its bearing body which, with respect to its axial extent, protrudes axially on both sides of the outer sleeve made of plastic, which is arranged in the region of the waist, with a partial radial overlap. According to an intended embodiment, an undercut is also provided on the bearing body in the region of its waist to increase the extrusion force. In this respect, the bearing described has a comparatively complicated geometric shape.

Aufgabe der Erfindung ist es, eine Lösung anzugeben, welche es ermöglicht, die Auspresskraft bei einem mit einer Außenhülse aus Kunststoff ausgestatteten Buchsenlager unter Beibehaltung einer einfachen Form für das Lager zu erhöhen.The object of the invention is to provide a solution which makes it possible to increase the extrusion force in a bush bearing equipped with an outer sleeve made of plastic while maintaining a simple shape for the bearing.

Die Aufgabe wird durch ein Verfahren zur Herstellung eines elastomeres Buchsenlagers mit den Merkmalen des Hauptanspruchs gelöst. Vorteilhafte Aus- beziehungsweise Weiterbildungen der Erfindung sind durch die Unteransprüche gegeben.
Das gemäß dem zur Lösung der Aufgabe vorgeschlagenen Verfahren hergestellte elastomere Buchsenlager ist insbesondere zur Aufnahme durch ein Aufnahmeauge bestimmt, in welches das Buchsenlager eingepresst wird. Es besteht in an sich bekannter Weise aus einem metallischen Innenteil, einem das Innenteil umgebenden Außenrohr und einem zwischen dem Innenteil und dem Außenrohr angeordneten, mit ihnen durch Vulkanisation verbundenen elastomeren Lagerkörper. Dabei besteht das Außenrohr entsprechend der Aufgabe aus einem Kunststoff. Das metallische Innenteil ist strang- oder rohrförmig ausgebildet.
Zur Erhöhung der Auspresskraft des durch ein Aufnahmeauge aufzunehmenden Buchsenlagers weist dessen Außenrohr erfindungsgemäß eine dünne Ummantelung in Form einer an das Außenrohr vulkanisierten elastomeren Schicht auf. Während der Kunststoff, aus welchem das Außenrohr ausgebildet ist, ein gewisses Kriechverhalten zeigt, durch welches die Auspresskraft eines entsprechenden Lagers gegenüber Buchsenlagern mit einer Außenhülse aus Stahl oder Aluminium deutlich herabgesetzt ist, weist die nach der Erfindung vorgesehene elastomere Ummantelung ein Verharrungsvermögen auf, so dass in Bezug auf ein das Lager aufnehmendes Aufnahmeauge eine hohe Auspresskraft sichergestellt wird. Hierdurch ist es möglich, ein für die Aufnahme durch ein Aufnahmeauge vorgesehenes Buchsenlager zur Verfügung zu stellen, welches aufgrund der Beschaffenheit seines Außenrohres aus einem Kunststoff ein vergleichsweise geringes Gewicht besitzt und dennoch eine hohe Auspresskraft aufweist. Durch die Ummantelung des Außenrohrs mit dem Elastomer wird dabei das Gewicht des Buchsenlagers kaum beeinflusst. Auch bedarf es zur Sicherstellung einer hohen Auspresskraft des Lagers hinsichtlich der Lagergeometrie keiner besonderen Gestaltungsmaßnahmen. Vorzugsweise ist die Ummantelung des Außenrohrs des Buchsenlagers als eine dünne Gummischicht ausgebildet, die weniger als 2 mm dick ist. Grundsätzlich ist es denkbar, das Außenrohr des Lagers nur abschnittsweise mit einer entsprechenden elastomeren Ummantelung zu versehen. Günstiger und insbesondere bei sehr geringen Schichtdicken bevorzugt, ist es jedoch, wenn die Ummantelung das Außenrohr über dessen gesamte axiale Erstreckung umgibt.
Das erfindungsgemäße Prinzip einer Ummantelung mit einer elastomeren Schicht ist grundsätzlich bei allen Buchsenlagern mit einem aus Kunststoff bestehenden Außenrohr anwendbar. Demgemäß kann das Außenrohr beziehungsweise die Außenhülse des erfindungsgemäßen Buchsenlagers vorzugsweise aus einem Polyamid, einem Polyurethan oder auch aus einem ABS-Kunststoff (Acrylnitril-Butadien-Styrol) bestehen.
Ferner ist es möglich, das Lager in Abhängigkeit vom jeweiligen Einsatzzweck auch als Hydrobuchse auszubilden. Hierbei sind dann, wie aus dem Stand der Technik bekannt, in dem Lager mindestens zwei Kammern zur Aufnahme eines fluiden Dämpfungsmittels ausgebildet, welche durch mindestens einen Kanal miteinander verbunden sind.
Nach dem zur Herstellung des zuvor beschriebenen elastomeren Buchsenlagers und zur Lösung der Aufgabe vorgesehenen Verfahren wird zur Ummantelung des Außenrohres ein vorgefertigtes elastomeres Formteil in die bei der Herstellung der Buchse zur Vulkanisation verwendete Form eingelegt und dieses beispielsweise schlauchförmige Formteil gemeinsam mit der Buchse vulkanisiert. Für eine sichere Verbindung der Ummantelung mit dem Außenrohr erfolgt die Vulkanisation der Ummantelung vorzugsweise durch die Kombination eines zur Erzeugung der Außenhülse verwendeten Spritzpressverfahrens (TM-Transfer Moulding) oder eines Spritzgießverfahrens (IM-Injection Moulding) mit einem Postbondingprozess, bei welchem das bereits teilvulkanisierte Gummiformteil während der Erzeugung des Außenrohrs vollständig ausvulkanisiert und dabei mit dem, vorzugsweise mit einer Haftschicht beziehungsweise einem zusätzlichen Haftmittel versehenen Außenrohr verbunden wird. Ein entsprechendes, das Anhaften eines teilvulkanisierten Formteils an eine Metall- oder Kunststofffläche durch dessen Ausvulkanisieren ermöglichendes Verfahren, für welches inzwischen der Begriff Postbonding gebräuchlich ist wird beispielsweise in der DE 199 19 573 A1 beschrieben. Mit dem beschriebenen Verfahren einer Kombination aus TM-Transfer oder IM-Injection mit einem Postbondingprozess lassen sich elastomere Ummantelungen mit Schichtdicken von weniger als 2 mm realisieren, wobei jedoch zur Erzeugung ultradünner, hautartiger Gummischichten mit einer Dicke von 0,2 mm oder weniger, andere Verfahren zum Einsatz gelangen.The object is achieved by a method for producing an elastomeric bush bearing with the features of the main claim. Advantageous refinements and developments of the invention are given by the subclaims.
The elastomeric bush bearing produced according to the method proposed to achieve the object is in particular intended to be received by a receiving eye into which the bush bearing is pressed. In a manner known per se, it consists of a metallic inner part, an outer tube surrounding the inner part and an elastomeric bearing body arranged between the inner part and the outer tube and connected to them by vulcanization. The outer tube consists of a plastic, depending on the task. The metallic inner part is in the form of a strand or a tube.
To increase the extrusion force of the bushing bearing to be received by a receiving eye, its outer tube has, according to the invention, a thin casing in the form of an elastomeric layer vulcanized onto the outer tube. While the plastic from which the outer tube is made exhibits a certain creep behavior, which significantly reduces the extrusion force of a corresponding bearing compared to bush bearings with an outer sleeve made of steel or aluminum, the elastomeric casing provided according to the invention has a persistence so that A high extrusion force is ensured in relation to a receiving eye receiving the bearing. This makes it possible to provide a bush bearing provided for receiving by a receiving eye which, due to the nature of its outer tube made of plastic, has a comparatively low weight and yet has a high extrusion force. By sheathing the outer tube with the elastomer, the weight of the bushing bearing is hardly affected. In order to ensure a high press-out force of the bearing with regard to the bearing geometry, there is also no need for any special design measures. The casing of the outer tube of the bushing bearing is preferably designed as a thin rubber layer that is less than 2 mm thick. In principle, it is conceivable to provide the outer tube of the bearing with a corresponding elastomeric casing only in sections. However, it is more favorable and particularly preferred in the case of very small layer thicknesses if the casing surrounds the outer tube over its entire axial extent.
The principle according to the invention of sheathing with an elastomeric layer is basically applicable to all bush bearings with an outer tube made of plastic. Accordingly, the outer tube or the outer sleeve of the bushing bearing according to the invention can preferably consist of a polyamide, a polyurethane or an ABS plastic (acrylonitrile-butadiene-styrene).
It is also possible to design the bearing as a hydraulic bushing, depending on the particular application. Here, as is known from the prior art, at least two chambers are used in the camp Receiving a fluid damping means formed, which are connected to one another by at least one channel.
According to the method provided for the production of the elastomeric bushing bearing described above and for solving the problem, a prefabricated elastomeric molded part is inserted into the mold used for vulcanization in the manufacture of the socket to encase the outer tube and this, for example, tubular molded part is vulcanized together with the socket. For a secure connection of the casing to the outer tube, the casing is preferably vulcanized by combining an injection molding process (TM transfer molding) or an injection molding process (IM injection molding) with a postbonding process in which the molded rubber part is already partially vulcanized During the production of the outer tube, it is completely vulcanized and connected to the outer tube, which is preferably provided with an adhesive layer or an additional adhesive. A corresponding method which enables a partially vulcanized molded part to adhere to a metal or plastic surface by vulcanizing it, for which the term postbonding is now used, is for example in US Pat DE 199 19 573 A1 described. With the described method of a combination of TM transfer or IM injection with a postbonding process, elastomeric sheaths with layer thicknesses of less than 2 mm can be realized, although other layers are used to produce ultra-thin, skin-like rubber layers with a thickness of 0.2 mm or less Procedure to be used.

Die Erfindung soll nachfolgend nochmals anhand eines Ausführungsbeispiels erläutert werden. In den zugehörigen Zeichnungen zeigen:

Fig. 1:
eine teilweise geschnittene räumliche Darstellung einer Ausbildungsform des erfindungsgemäßen Buchsenlagers,
Fig. 2:
das Buchsenlager gemäß Fig. 1 in einer Explosionsdarstellung.
Fig. 3a:
den Einfluss der Schichtdicke für die Ummantelung des Außenrohrs auf das Verhalten beim Einpressen des Lagers in ein Aufnahmeauge
The invention is to be explained again below using an exemplary embodiment. In the accompanying drawings show:
Fig. 1:
a partially sectioned three-dimensional representation of an embodiment of the bush bearing according to the invention,
Fig. 2:
the bush bearing according to Fig. 1 in an exploded view.
Fig. 3a:
the influence of the layer thickness for the coating of the outer tube on the behavior when the bearing is pressed into a receiving eye

Die Fig. 1 zeigt eine mögliche Ausbildungsform eines erfindungsgemäß hergestellten elastomeren Buchsenlagers in einer räumlichen Darstellung, wobei das Lager zur besseren Verdeutlichung seines Aufbaus in einem Teilschnitt dargestellt ist. Das Lager besteht aus dem rohrförmigen metallischen Innenteil 1, dem dieses Innenteil 1 konzentrisch umgebenden Außenrohr 2 aus Kunststoff und dem zwischen dem Innenteil 1 und dem Außenrohr 2 angeordneten und mit ihnen durch Vulkanisation verbundenen elastomeren Lagerkörper 3. Gemäß der Erfindung ist das aus Kunststoff bestehende Außenrohr 2 mit einer Ummantelung 4 in Form einer dünnen elastomeren Schicht, vorzugsweise einem Gummimantel, versehen. Die dünne Ummantelung 4 aus Gummi bedeckt das Außenrohr 2 über dessen gesamte Erstreckung in der axialen Richtung a und weist eine Dicke d von zumindest weniger als 2 mm auf.
In der Fig. 2 ist das Buchsenlager gemäß der Fig. 1 nochmals in einer Explosionsdarstellung gezeigt. Hier sind seine einzelnen Elemente, nämlich das rohrförmige Innenteil 1, der elastomere Lagerkörper 3 beziehungsweise die Gummifeder, das Kunststoffaußenrohr 2 sowie die elastomere Ummantelung 4 des Außenrohrs nochmals gut zu erkennen. Die Ummantelung 4 des Außenrohrs 2 wird dadurch realisiert, dass das in der Fig. 2 erkennbare Formteil aus Gummi in eine zur Herstellung des Buchsenlagers bei der Vulkanisation verwendete Form eingelegt und gemeinsam mit dem Buchsenlager vulkanisiert wird.
In der Figur 3a, in der das erfindungsgemäße Buchenslager in einer Schnittdarstellung mit einem in axialer Richtung geführten Schnitt dargestellt ist, wird der Vorgang des Einpressens des Buchsenlagers in ein Aufnahmeauge 5 in einer Prinzipdarstellung veranschaulicht. Aufgrund der auf ihre Bemessung zurückzuführenden Überdeckung zwischen dem gummiummantelten Außenrohr 2 des Buchsenlagers und dem Aufnahmeauge 5 sowie aufgrund des hohen Beharrungsvermögens der Ummantelung 4, welche im Ergebnis zu der erfindungsgemäß angestrebten hohen Auspresskraft des Gummilagers führt, kann es beim Einpressen des Gummilagers in das Aufnahmeauge 5, wie in der Fig. 3a gezeigt, dazu kommen, dass sich die Ummantelung 4 beziehungsweise der Gummimantel beim Einpressvorgang zusammenschiebt. Dies kann durch den Einsatz eines Gleitmittels verhindert werden.the Fig. 1 shows a possible embodiment of an elastomeric bush bearing produced according to the invention in a three-dimensional representation, the camp is shown in a partial section to better illustrate its structure. The bearing consists of the tubular metallic inner part 1, the outer tube 2 made of plastic, which concentrically surrounds this inner part 1, and the elastomeric bearing body 3 arranged between the inner part 1 and the outer tube 2 and connected to them by vulcanization 2 with a jacket 4 in the form of a thin elastomeric layer, preferably a rubber jacket. The thin casing 4 made of rubber covers the outer tube 2 over its entire extent in the axial direction a and has a thickness d of at least less than 2 mm.
In the Fig. 2 is the bush bearing according to Fig. 1 shown again in an exploded view. Here its individual elements, namely the tubular inner part 1, the elastomeric bearing body 3 or the rubber spring, the plastic outer tube 2 and the elastomeric casing 4 of the outer tube can be clearly seen again. The casing 4 of the outer tube 2 is realized in that the in the Fig. 2 Recognizable molded part made of rubber is inserted into a mold used to manufacture the bushing bearing during vulcanization and is vulcanized together with the bushing bearing.
In the Figure 3a , in which the bush bearing according to the invention is shown in a sectional illustration with a section guided in the axial direction, the process of pressing the bush bearing into a receiving eye 5 is illustrated in a schematic diagram. Due to the overlap between the rubber-coated outer tube 2 of the bushing bearing and the receiving eye 5, which can be traced back to its dimensioning, as well as due to the high inertia of the casing 4, which results in the high pressing-out force of the rubber bearing aimed at according to the invention, when the rubber bearing is pressed into the receiving eye 5 , like in the Fig. 3a shown, come in addition that the sheath 4 or the rubber jacket pushes together during the press-in process. This can be prevented by using a lubricant.

BezugszeichenlisteList of reference symbols

11
Innenteilinner part
22
AußenrohrOuter tube
33
LagerkörperBearing body
44th
UmmantelungSheathing
55
AufnahmeaugeReceiving eye
aa
axiale Richtungaxial direction
dd
Dickethickness

Claims (2)

  1. Method for manufacturing an elastomer bush bearing, consisting of a metallic, strand- or tube-shaped inner part (1), an outer tube (2) surrounding the inner part (1) and an elastomer bearing body (3) arranged between the inner part (1) and the outer tube (2) and connected to them by vulcanisation, wherein the outer tube (2) is formed of plastic, characterised in that the outer tube (2) has a covering (4) in the form of an elastomer layer vulcanised on the outer tube, wherein, in order to form the covering (4) of the outer tube (2), a pre-fabricated elastomer moulded part is laid into the mould used for vulcanisation when manufacturing the bush and is vulcanised together with the bush.
  2. Method according to claim 1, characterised in that the covering (4) is vulcanised by combining an injection pressing or injection moulding process, which is used to generate the outer sleeve (2), with a post bonding process, in which the partially vulcanised elastomer moulded part forming the subsequent covering (4) is adhered to the outer tube (2) with arrangement of an adhesive.
EP10770974.3A 2009-09-24 2010-09-06 Elastomeric journal bearing having a plastic outer tube Not-in-force EP2480800B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009044958A DE102009044958A1 (en) 2009-09-24 2009-09-24 Elastomeric bush bearing with plastic outer tube
PCT/DE2010/050068 WO2011035779A1 (en) 2009-09-24 2010-09-06 Elastomeric journal bearing having a plastic outer tube

Publications (3)

Publication Number Publication Date
EP2480800A1 EP2480800A1 (en) 2012-08-01
EP2480800B1 EP2480800B1 (en) 2018-07-18
EP2480800B2 true EP2480800B2 (en) 2021-11-03

Family

ID=43446870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10770974.3A Not-in-force EP2480800B2 (en) 2009-09-24 2010-09-06 Elastomeric journal bearing having a plastic outer tube

Country Status (3)

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EP (1) EP2480800B2 (en)
DE (1) DE102009044958A1 (en)
WO (1) WO2011035779A1 (en)

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CN103121385A (en) * 2011-11-21 2013-05-29 王亚兵 Vehicle thrust rod high-density rubber bushing
DE102012200251B4 (en) * 2012-01-10 2022-03-17 Zf Friedrichshafen Ag Handlebar with elastomer component
DE102012108799B4 (en) 2012-09-18 2014-08-07 Trelleborgvibracoustic Gmbh Elastic bushing bearing
DE102013223295A1 (en) * 2013-11-15 2015-05-21 Bayerische Motoren Werke Aktiengesellschaft Functional component, in particular for a motor vehicle, method for producing a functional component and motor vehicle, which comprises a functional component
DE102020115293B4 (en) 2020-06-09 2022-05-12 Benteler Automobiltechnik Gmbh Elastomer bearing and bearing arrangement
CN114151486A (en) * 2021-11-24 2022-03-08 重庆长安汽车股份有限公司 Rubber bushing and automotive suspension

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Also Published As

Publication number Publication date
DE102009044958A1 (en) 2011-04-07
EP2480800B1 (en) 2018-07-18
WO2011035779A1 (en) 2011-03-31
EP2480800A1 (en) 2012-08-01

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